WO2012079917A3 - Strainer - Google Patents

Strainer Download PDF

Info

Publication number
WO2012079917A3
WO2012079917A3 PCT/EP2011/070567 EP2011070567W WO2012079917A3 WO 2012079917 A3 WO2012079917 A3 WO 2012079917A3 EP 2011070567 W EP2011070567 W EP 2011070567W WO 2012079917 A3 WO2012079917 A3 WO 2012079917A3
Authority
WO
WIPO (PCT)
Prior art keywords
strainer
perforations
layer
circumference
fibrous material
Prior art date
Application number
PCT/EP2011/070567
Other languages
German (de)
French (fr)
Other versions
WO2012079917A2 (en
Inventor
Gerd Gottschalk
Original Assignee
Voith Patent Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE102010063231A external-priority patent/DE102010063231A1/en
Application filed by Voith Patent Gmbh filed Critical Voith Patent Gmbh
Priority to EP11785669.0A priority Critical patent/EP2652195B1/en
Priority to CN201180067575.XA priority patent/CN103370470B/en
Publication of WO2012079917A2 publication Critical patent/WO2012079917A2/en
Publication of WO2012079917A3 publication Critical patent/WO2012079917A3/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
    • D21D5/02—Straining or screening the pulp
    • D21D5/16—Cylinders and plates for screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0408—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing two or more liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
    • B07B1/469—Perforated sheet-like material
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/0027—Screen-cloths
    • D21F1/0036—Multi-layer screen-cloths
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/0027—Screen-cloths
    • D21F1/0063—Perforated sheets
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
    • G01F11/02—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement
    • G01F11/021—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the piston type
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
    • G01F11/02—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement
    • G01F11/021—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the piston type
    • G01F11/029—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the piston type provided with electric controlling means

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Filtering Materials (AREA)

Abstract

The invention relates to a strainer for treating a fibrous material suspension suitable for producing a fibrous material web, consisting of at least two strainer layers (1, 2) which are connected to each other and comprise perforations (3, 4), wherein the perforations (3, 4) form strainer openings leading through the strainer, and the perforations (3, 4) of at least one strainer layer (1) are considerably smaller than those (4) of another strainer layer (2). Without any considerable impairment of the stability, as large an open surface area as possible is to be achieved in that a plurality of small perforations (3) of a strainer layer (1) lead, over the entire extent, into a large perforation (4) of the other strainer layer (2), and the circumference of the large perforation (4) in each case is congruent with at least one segment (5) of the circumference of several smaller perforations (3).
PCT/EP2011/070567 2010-12-16 2011-11-21 Strainer WO2012079917A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP11785669.0A EP2652195B1 (en) 2010-12-16 2011-11-21 Strainer
CN201180067575.XA CN103370470B (en) 2010-12-16 2011-11-21 Filter screen

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE202010016701.9 2010-12-16
DE202010016701U DE202010016701U1 (en) 2010-12-16 2010-12-16 scree
DE102010063231A DE102010063231A1 (en) 2010-12-16 2010-12-16 Sieve for treating fibrous material suspension suitable for producing fibrous material web used in paper machine, has specific number of screen layers which are connected to each other and comprised of perforations
DE102010063231.7 2010-12-16

Publications (2)

Publication Number Publication Date
WO2012079917A2 WO2012079917A2 (en) 2012-06-21
WO2012079917A3 true WO2012079917A3 (en) 2013-02-14

Family

ID=45002955

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/070567 WO2012079917A2 (en) 2010-12-16 2011-11-21 Strainer

Country Status (4)

Country Link
EP (1) EP2652195B1 (en)
CN (1) CN103370470B (en)
DE (1) DE202010016701U1 (en)
WO (1) WO2012079917A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106049158A (en) * 2016-05-30 2016-10-26 许昌中亚工业智能装备股份有限公司 Novel filter screen for paper machine
EP3597821B1 (en) * 2018-07-17 2024-01-03 Voith Patent GmbH Coupling for a machine for producing a sheet of fibrous material

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3336874A1 (en) * 1983-10-11 1985-04-25 Hermann Finckh Maschinenfabrik GmbH & Co, 7410 Reutlingen SORTING SCREEN
EP0651091A1 (en) * 1993-10-28 1995-05-03 Beloit Technologies, Inc. Finely perforated undulating screen cylinder
WO2008131974A1 (en) * 2007-04-30 2008-11-06 Voith Patent Gmbh Method for the production of a screen, particularly a rigid screen, for the treatment of fibrous material suspensions suitable for the production of paper

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19547585A1 (en) 1995-12-20 1996-12-05 Voith Sulzer Stoffaufbereitung Sieving element

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3336874A1 (en) * 1983-10-11 1985-04-25 Hermann Finckh Maschinenfabrik GmbH & Co, 7410 Reutlingen SORTING SCREEN
EP0651091A1 (en) * 1993-10-28 1995-05-03 Beloit Technologies, Inc. Finely perforated undulating screen cylinder
WO2008131974A1 (en) * 2007-04-30 2008-11-06 Voith Patent Gmbh Method for the production of a screen, particularly a rigid screen, for the treatment of fibrous material suspensions suitable for the production of paper

Also Published As

Publication number Publication date
DE202010016701U1 (en) 2011-04-14
WO2012079917A2 (en) 2012-06-21
CN103370470A (en) 2013-10-23
EP2652195B1 (en) 2015-01-07
CN103370470B (en) 2016-03-09
EP2652195A2 (en) 2013-10-23

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